Oil burner furnace



Patented Jan. 14, 1941 UNITED STATES PATENT OFFICE on. BURNER FURNACE 'mmnxoib, New Holland, Pa. 7 Application March a, 1939, Serial No. 260,198

1 Claim. (Cl- 122-436) This invention relates to improvements in boilers as described in the present specification and illustrated by the accompanying drawing that forms part of the same.

The invention consists essentially of the novel construction and arrangement of parts whereby water is heated between outer and inner jackets and the firebox supported by the inner jacket completely surrounded bxwater. n An object of the invention is to provide a furnace and boiler so combined as to cause the greatest possible transfer of heat from the combustion chamber and the flue gases to the water between the inner and outer jackets.

15 Another object of the invention is to provide a domestichot water heater having a separate water system from that of the boiler while being housed within the boiler structure.

Another object of the invention is to provide 20 a cleanout box whereby soot, dirt, etc. may be readily cleaned from all parts of the flue passages and still another object of the invention-is to provide a fuel burning furnace having a boiler built of easily renewable and assembled units of durable as construction, of easy manufacture and reliable in use.

Other objects and advantages of the invention reside in certain novel features of construction, combination and arrangements of parts which will 7 be hereinafter more fully described and pointed out in the appended claim, reference being had to the accompanying drawing forming part of this specification, and in which Figure 1 is a view in longitudinal vertical section of the boiler.

Figure 2 is a front view of the boiler. and: Figure 3 is a rear view of the boiler. Figure, 4 shows a modified construction. Referring to the drawing whe'reinfor the sake of illustration is shown the preferred embodiment of the invention, the numeral 2 designates the outer jacket of the furnace supported from the floor by legs 3. Secured to jacket 2 are water inlet and outlet ports 4 and 5. 6 designates generally the main or front section of the inner jacket of the boiler which comprises a rectangular box of metal supported within the forward portion of the outer jacket in spaced relation to the walls thereof so as to be entirely surrounded by the 50 water to be heated in the outer jacket. This inner jacket section 6 supports and completely surrounds the firebox l2. Disposed within the outer jacket 2 immediately in rear of the inner jacket section 6 is a hollow bailie or flue member 5 fl providinga flue passage 1:; and spaced from the section 6 to provide a water leg lb.- This hollow baflle wall or flue member 1 communicates at its bottom through an inlet passage lc with the base of the section 6 in rear of the firebox. Enclosed in the outer jacket in rear of the hollow 5 battle wall I is an intermediate inverted U-shaped baflie wall or double baille or flue member 8 pro- I viding flue passages 8a communicating at their lower ends with each other, and disposed in rear of the baffle member 8 is a rear wall baflie or flue 10 member 8 forming a flue passage 9a communicating at the bottom of said member withan outlet pipe 9c extending outwardly through the rear wall of the jacket 2. The hollow bailie walls are connected at their upper ends with each other by pipes l0 and II. The several baflie members extend almost completely across thejacket 2 and the construction and arrangement of the baflie members 8 and 9 is such as to form water legs 8b, 8c, 8d and 9b which are parallel with each 2 other and with the water leg 71). The hollow bafiie walls 8 and 9, instead of being separately formed,

inay be cast integrally. with the main jacket 8 and with each other in which case the connecting pipes l0 and II would not be used as the tortuous 2 5 flue passage would be continuous. The main or front section of the inner jacket 6 is provided with an opening H at its front, from its base to a height that will just clear the top of the firebox l2, which is adapted to be slid in and out through a doorway formed by said opening and a similar rectangular 'opening ll in the outer jacket 2, the space between the walls of the jackets around the marginal edges of the doorway being suitably closed. A removable heat insulating block I5 is provided to normally seat within this doorway in front of the-fireb0x. The outer portion of the doorway formed bythe rectangular opening M in the outer jacket 2 is closed by a plate It detachably secured to the front of the jacket 2 40 and having an opening I! therein registering with openings l1 and 18 in the block l5 and front of the firebox l3 through'which a combustion unit such as an oil burner may be placed for cooperation with the firebox IS. The block I5 is suitably secured either to the plate It or to the front of the firebox so as to be withdrawn therewith when it is desired to remove the firebox. Forming part of inner jacket 6. is a pipe 20 which extends through the-front of the inner jacket 2 and is normally closed by a heat insulated inspection door 2|. A standard flame detector 22 forms another extension of jacket 6 and projects through an opening in theouter jacket 2. A clean-out box 23 of rectangular formation extends through one side of the outer jacket 2 near its base and enters one wall of the baflle or flue member I and the intermediate bafile or flue member 8 of the boiler, said box being closed by a clean-out plate 24 secured to outer jacket.2. A domestic hot water heater 25 consisting of U-shaped pipes is extended through the rear of jacket 2 and lies in a plane parallel tothe top of the boiler and is secured to the outer jacket by means of a collar 26.

In operation the space between the inner and outer jackets and the water legs will be filled with water through inlet pipe 4. The heat of the combustion chamber [3 will be transferred to the water surrounding the inner jacket 6 and the products of combustion will pass through the flue passages of the hollow baflie walls I, 8 and 9 to a flue connection secured to the pipe So at the base of the baiiie wall section 9. By this peculiar construction of the furnace it is readily seen that the greatest possible amount of heat is absorbed by the water within my furnace. The construction of the boiler is made of easily renewable parts which upon failure may be replaced cheaply and by unskilled labor. The clean-out plate 24 may be removed so that the soot and ashes of the products of combustion may be easily removed from the main and intermediate inner jackets 8 and 8. The domestic hot water heater 25 is for the purpose of heating water for household use, and while nothing novel is claimed for its construction this peculiar combination and its position within the boiler makes for a very efllcient and satisfactory means of conveying heat to the water within said heater. The front of the boiler is provided with the usual aquastate 21 and thermometer 28 by which the temperature may be set and observed.

What is claimed as new is:

A boiler for a heating system comprising an outer jacket and an inner jacket arranged to form therebetween a chamber for fluid to be heated, said inner jacket being arranged within the front portion of said outer jacket, the front wall portions of said jackets having registering apertures therein, a firebox adapted to be supported within said inner jacket, said firebox being insertable and removable through said apertures, a removable closure adapted to seal said aperture in said outer jacket, said closure including a removable heat insulating member adapted to seal the space around said firebox and between the walls of said jackets in which said apertures are formed, and

a plurality of spaced interconnected hollow baflle walls disposed within the rear portion of the outer jacket between the inner jacket and the rear wall of the outer jacket, and extending transversely within the remaining space within the outer jacket, saidv baflie walls being arranged to provide a tortuous flue for the passage of the combustion gases, the baflle wall adjacent said inner jacket being in communication at its base with the inner jacket in the rear of, and below the upper edge of said firebox.

JOHN L. KOLB. 

